From the 973 Hz tone that only lasts 25 ms to the continuous 500 Hz “woodpecker”, every element of the sound was meticulously recreated in his Arduino code.

Step 4: Display Spotify Track Info on Your LCD Using LDC.js and Arduino. Prepare your Arduino hardware: Connect your LCD display to your Arduino via I2C (check your wiring matches LCD address 0x27).

You may wonder why anyone would want to learn Morse code. You don’t need it for a ham license anymore. There are, however, at least three reasons you might want to learn it anyway. First, som… ...